| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.netbeans.modules.javascript2.nodejs.editor; |
| |
| import java.util.Arrays; |
| import org.netbeans.api.lexer.Token; |
| import org.netbeans.api.lexer.TokenSequence; |
| import org.netbeans.modules.javascript2.lexer.api.JsTokenId; |
| import org.netbeans.modules.javascript2.lexer.api.LexUtilities; |
| |
| /** |
| * |
| * @author Petr Pisl |
| */ |
| public enum NodeJsContext { |
| |
| MODULE_PATH, |
| ASSIGN_LISTENER, |
| AFTER_ASSIGNMENT, |
| GLOBAL, |
| UNKNOWN; |
| |
| public static NodeJsContext findContext(TokenSequence<? extends JsTokenId> ts, final int offset) { |
| ts.move(offset); |
| if (ts.moveNext() || ts.movePrevious()) { |
| Token<? extends JsTokenId> token = ts.token(); |
| JsTokenId tokenId = token.id(); |
| if (tokenId == JsTokenId.STRING || tokenId == JsTokenId.STRING_END) { |
| token = LexUtilities.findPrevious(ts, Arrays.asList(JsTokenId.WHITESPACE, JsTokenId.EOL, JsTokenId.BLOCK_COMMENT, JsTokenId.LINE_COMMENT, |
| JsTokenId.STRING_BEGIN, JsTokenId.STRING, JsTokenId.STRING_END, JsTokenId.OPERATOR_COMMA)); |
| tokenId = token.id(); |
| if (tokenId == JsTokenId.BRACKET_LEFT_PAREN && ts.movePrevious()) { |
| token = LexUtilities.findPrevious(ts, Arrays.asList(JsTokenId.WHITESPACE, JsTokenId.BLOCK_COMMENT)); |
| tokenId = token.id(); |
| if (tokenId == JsTokenId.IDENTIFIER) { |
| if (NodeJsUtils.REQUIRE_METHOD_NAME.equals(token.text().toString())) { |
| return MODULE_PATH; |
| } |
| if (NodeJsUtils.ON_METHOD_NAME.equals(token.text().toString())) { |
| return ASSIGN_LISTENER; |
| } |
| } |
| } |
| } else { |
| if ((tokenId == JsTokenId.EOL || tokenId == JsTokenId.OPERATOR_SEMICOLON || tokenId == JsTokenId.OPERATOR_ASSIGNMENT |
| || tokenId == JsTokenId.WHITESPACE || tokenId == JsTokenId.IDENTIFIER |
| || tokenId == JsTokenId.BRACKET_LEFT_CURLY) && ts.movePrevious()) { |
| token = LexUtilities.findPrevious(ts, Arrays.asList(JsTokenId.WHITESPACE, JsTokenId.BLOCK_COMMENT, JsTokenId.EOL)); |
| tokenId = token.id(); |
| } |
| if (tokenId.isKeyword() && ts.offset() == offset) { |
| return GLOBAL; |
| } |
| if (!ts.movePrevious()) { |
| return GLOBAL; |
| } |
| if (tokenId == JsTokenId.IDENTIFIER && NodeJsUtils.REQUIRE_METHOD_NAME.startsWith(token.text().toString())) { |
| token = LexUtilities.findPrevious(ts, Arrays.asList(JsTokenId.WHITESPACE, JsTokenId.BLOCK_COMMENT, JsTokenId.EOL)); |
| tokenId = token.id(); |
| if (!ts.movePrevious()) { |
| return GLOBAL; |
| } |
| } |
| if (tokenId == JsTokenId.OPERATOR_ASSIGNMENT) { |
| // offer require() |
| return AFTER_ASSIGNMENT; |
| } |
| if (tokenId == JsTokenId.OPERATOR_SEMICOLON || tokenId == JsTokenId.BRACKET_LEFT_CURLY || tokenId == JsTokenId.BRACKET_RIGHT_CURLY) { |
| return GLOBAL; |
| } |
| |
| } |
| } |
| return UNKNOWN; |
| } |
| |
| public static String getEventEmiterName(TokenSequence<? extends JsTokenId> ts, final int offset) { |
| if (findContext(ts, offset) == ASSIGN_LISTENER) { |
| if (ts.movePrevious() && ts.token().id() == JsTokenId.OPERATOR_DOT) { |
| if (ts.movePrevious() && ts.token().id() == JsTokenId.IDENTIFIER) { |
| return ts.token().text().toString(); |
| } |
| } |
| } |
| return null; |
| } |
| } |